Are there any plans for products with following features?

• Like CRS326-24G-2S+RM but with 4 instead of 2 SFP+ slots. This would be a solution if CRS326-24S+2Q+RM is too big.
• Like CRS326-24G-2S+RM but with 8 GE ports instead of 24. This would be a solution if CRS326-24G-2S+RM is too big.

• Like CRS326-24G-2S+RM but with 4 instead of 2 SFP+ slots. This would be a solution if CRS326-24S+2Q+RM is too big.

How about the : CRS328-24P-4S+RM

Are there any plans for products with following features?

• Like CRS326-24G-2S+RM but with 8 GE ports instead of 24. This would be a solution if CRS326-24G-2S+RM is too big.

How about the : CSS610-8G-2S+IN

The CRS328-24P-4S+RM is a nice switch, but way too big. Need a short depth version. The CRS326-24G-2S+RM is due an upgrade to 4 SFP+ ports.

The non-rackmount version of that switch is close to your wishes. It's no shallower, only less wide since it doesn't need to fit in a rack.

These two CRS326 switches are based on the same core SoC (CPU + switch chip) as in the CRS328, and it has 4 SFP+ ports, so adding two more SFP+ ports to the CRS326 without adding the PoE features that account for all that extra case depth would be a small matter of engineering. I can only suppose the reason it has only 2 SFP+ is to keep the retail cost down, to meet some perceived market-positioning target.

The problem with getting this switch family down to 8 GigE ports is that there is no Marvell Prestera DX family member with fewer 1G lanes. The closest option is the 98DX8212 with twelve 10G lanes, which is what gets you one of the most expensive switches in MikroTik's line at roughly 3x the cost of the CRS326. Maybe taking the same SoC and strapping cheaper 1G parts to it ("underclocking" it, if you will) would save a bunch of cost and let it be smaller, but it seems like an ungainly design to me, from an EE standpoint.

Another option would be to take a CRS305 and strap that to some other switch with a single SFP or SFP+ uplink. If this sounds like a Mickey Mouse solution, realize that until some Ethernet SoC vendor provides a single SoC that has this sort of fan-out, this is what you're asking MikroTik to do internally. The only cost savings would be from a single enclosure and power supply.

I'm not dismissing you here. I want similar things myself, but was I was forced to go with the overkill-for-my-purposes CRS328 to get all of the features I wanted in a single package. Yet, I sympathize with MikroTik's engineers: without COTS silicon to back the new design, they're left rigging things up internally as I've described.

Here's a question for you now: what competitor to MikroTik does an 8×1GbE + 4×10Gb SFP+ switch?

If such a thing doesn't exist, then we can assume MikroTik has the same problems sourcing parts to make it, giving the same result.

If it does exist, then we can try and figure out how they did it and see if it fits with MikroTik's design philosophy.

what competitor to MikroTik does an 8×1GbE + 4×10Gb SFP+ switch?

I just remembered that I found and rejected such a switch before buying the CRS328: QNAP's QSW-M408-4C. And why did I choose the MikroTik instead? Because QNAP's offering cost about the same as the CRS328 while lacking PoE and offering a far inferior OS, roughly on par with TP-Link "managed" switches. Even if you set PoE aside, getting RouterOS over whatever it is the likes of TP-Link and QNAP are shipping is worth it.

Still, it shows the hardware is do-able. MikroTik, if you can work out what it's built on and put RouterOS on that, this is what I would have preferred to buy, even if it meant strapping PoE injectors to it.

I just remembered that I found and rejected such a switch before buying the CRS328 ...

Agree, the CRS328 is just about the only PoE switch in MikroTik's lineup worth buying (outside of outdoor models). I mean, the goofy 8 port with two power supplies that you have to mount somewhere? I think its reasonable to ask for a short depth PoE option that is fully rack-able.

the CRS328 is just about the only PoE switch in MikroTik's lineup worth buying

The thing is, I'm using only 3 of the GigE ports, all for PoE, plus all four SFP+ ports. A 4+4 or 8+4 configuration would've been far more useful to me. I had to get an under-desk rack mount just to have a sensible place to put this monster.

Tip for those that follow in my footsteps: get a 2U rack, not 1U, if only so you have space to route cables over the top instead of letting them drape underneath. My 1U rack gives me juuuust enough space for the cable, but I have to unbolt one side's rack ear each time I want to change the cabling, to make room for the termination.