It is interesting though why Seat chose to do it this way. The boot latch is controled by a solenoid (there is no mechanical link between the handle and the latch, the handle acts as a switch that triggers the solenoid to release the latch) so pressing and holding the boot button on the keyfob 'could' have been designed to unlock it and actually release the latch.
In fact our other car (Octavia Mk2 VRS) does exactly that (identical key to Leon, probably identical boot lock mechanism) i.e. press and hold keyfob boot button unlocks boot and releases latch so you can just pull the boot lid open from anywhere without using the handle.
My guess is that because the Octy actually has several places where you can put your fingers and lift the boot lid (other than the release handle) like the number plate surround, the Leon doesn't. Other than lifting the S
badge the only other place you could lift it from is the rear wiper (not advisable) or by getting your fingers under the bottom between the lid and the bumper.
Curious. Mind you I find it fascinating and spend far too much time comparing the minute differences between two cars built on the same platform anywhay