As long as the bike/surfboard reservation is charged for rather than cross-subsidised by other passengers. I'm still not convinced having surfboards swinging around crowded stations is a good idea - those mountain bikes with the ludicrously wide handlebars are enough of a pain! If ORR see surfboards they will panic about the overheads!!Logic, as I said, is that you have the bike spaces set up to carry both. You can then reserve a bike space for a bike or for a surfboard. First come, first served.
I think surfboards are a bit of a diversion here, though, when looking at how the IET design is lacking for long distance services on which most people are not making day trips. Things that would make more difference would be a luggage rack in all four door pocket spaces (possibly plus another one mid-coach), more tables, maybe a family area and improved catering facilities - if most people are making 4-5 hour journeys you do have scope to sell "proper" food - I don't mean fancy restaurants, I mean the more affordable approach DB, SBB etc use.
So as I said the error was in designing one fleet for all of GWR's quite disparate IC operations.
The LNER removal of windowless seats for luggage seems a bit of a gimme on the 802s that are intended for the West Country fleets.