The 7u is cool, I started with one and now use 2 of them.
(1) They can be closed easily while patched. I have a Switch module installed, an Earthsea and a White Whale (I am obviously a traditionalist ), and I can close the lid easily with the USB cables running from the Switch to the monome modules.
(2) The integrated stand with 2 variable angles is awesome.
(3) The selection of 1u tiles offered by Intellijel is useful.
(4) I can connect & stack 2 of them to form a nice EMS-VCS3-like angle between them – and the whole combination is really super-solid.
(5) They are just lightweight enough to carry them for a prolonged time around. Nevertheless, make sure to have an antiperspirant with you if you walk longer distances. The optional shoulder strap is a godsend. I just hope that its nylon fabric doesn't wear off quickly at the sharp edges of the red connectors.
(1) Frankly, having the 1u row at the top is not that great in practice. I would have preferred to have it in the middle between the 2 rows. The 1u houses utility modules which need to be connected to modules in both rows, so having the 1u row in the middle helps keeping cables short and out of the way. Imagine you have both the modulation source and the modulation target in the lower row, but the target doesn't have an attenuator, so you have to patch over the upper row to reach the Quad Attenuator in the 1u row.
(2) You always have to pay for the MIDI jack and 1/4" jacks and boards. This feels a bit odd when you plan to have more than one 7u case (which is something Intellijel encourages by offering the Joiners to connect 2 7u case). I would have preferred blind panels that can be replaced with
(a) MIDI trio,
(b) 1/4" jacks,
(c) XLRs (with transformer-balanced output – no more ground hum!),
(d) USB power connectors (these are available as 1u tiles, but this would save space).
(e) Inter-Case Connection Kit: This would consist of a backplate with two RJ45 connectors and a 1U tile with 16 minijacks (see e.g. http://www.doepfer.de/A1809.htm, there was one more manufacturer at Superbooth this year with a similar idea – anybody remembers?)